The Dyson V9 Submarine and V11 Extra aren’t really competing for the same buyer — they’re solving two different problems. The V9 Submarine is a wet/dry hybrid built for daily hard-floor maintenance, while the V11 Extra is Dyson’s mainstream dry cordless flagship built for carpets, pet hair, and whole-home cleaning. Here’s how to tell which one actually fits your home.
Dyson V9 Submarine vs V11 Extra: Quick Comparison
| Feature | V9 Submarine | V11 Extra |
|---|---|---|
| Type | Wet/dry hybrid — vacuums and mops in one pass | Traditional dry cordless stick vacuum |
| Best flooring | Sealed hard floors only — not intended for deep carpet cleaning | Carpets and hard floors, with strong suction across both |
| Pet hair | Picks up pet hair effectively on hard floors; roller needs regular cleaning | Strong suction plus dedicated attachments for upholstery, cars, and hard-to-reach spots |
| Battery | Suitable for small-to-medium homes; drains faster in wet cleaning mode | Runtime depends on suction mode; standard mode suited to regular maintenance |
| Versatility | Reduces the need for separate mopping, but not a full carpet-cleaning replacement | Handheld conversion for furniture, stairs, and car interiors; whole-home use |
The Real Question: Do You Need Wet Cleaning or Whole-Home Coverage?
The V9 Submarine’s whole reason for existing is combining vacuuming and light mopping into one cordless tool for everyday hard-floor upkeep — it’s explicitly not built for deep carpet cleaning. If your home is mostly hard flooring and you want to cut down on separate mopping sessions, that’s exactly its use case. The V11 Extra doesn’t mop at all, but it’s the more versatile all-around cleaner: strong suction on both carpet and hard floors, a handheld mode for upholstery and car interiors, and no water system to maintain.
Which One Should You Buy?
Choose the Dyson V9 Submarine if your home is primarily hard flooring and you want to combine vacuuming and mopping into a single daily routine. Choose the Dyson V11 Extra if you have carpet anywhere in your home, want a handheld mode for furniture and car interiors, or would rather keep vacuuming and mopping as separate tools.
Shop Both Models
Dyson V9 Submarine: Amazon
Dyson V11 Extra:
Related Reviews
Read our full individual reviews for more detail: Dyson V9 Submarine Review and Dyson V11 Extra Review.
